Bottle for a liquefied combustible gas



Oct. 23, 1962 J. F. M. VERDlER-DUFOUR ETAL 3,059,572

BOTTLE FOR A LIQUEFIED COMBUSTIBLE GAS Filed Aug. 4, 1961 l I I ,1 E l 1i E i i iIl l \i a l r lNvzmAS J'E/W Fmco s MAR/E LERDIER-DLRUR RAOULALBERT PIERRE MESLIEK United States Patent 3,059,672 BOTTLE FOR ALIQUEFIED COMBUSTIBLE GAS Jean Francois Marie Verdier-Dufour, Paris,Raoul Albert Pierre Meslier, Montrouge, and Alain Philippe DanielThiery, Paris, France, assignors to Societe Metallurgiqne LiotardFreres, Paris, France, a corporation of France Filed Aug. 4, 1961, Ser.No. 129,332 Claims priority, application France Aug. 5, 1960 1 Claim.(Cl. 141-353) The present invention relates to a new bottle for aliquefied combustible gas and particularly to a smallsized bottle orcartridge, containing about 500 gr. which is used for stoves and otherapparatus using butane gas and is thrown away when the load of gas hasbeen used. One knows lost cartridges of this type which, at theirmounting on the utilization apparatus, are striked or punched at theirtop by a pusher integral with a nozzle, said nozzle being clamped uponthe bottle, with interposition of a gas-tight joint, by the frameforming a support for the apparatus fed through said nozzle. Thedrawback of this device is that the cartridge is to be filled up in anoverturned position before the setting of its bottom: a filling underpressure is impossible in such a case and the gas must be cooled to avery low temperature to avoid strong evaporation during the pouring ofthe liquefied gas into the bottle and the setting of the bottom. Thissupplementary cooling of the gas is a very expensive step andfurthermore does not prevent substantial gas losses due to evaporationduring the filling up and the setting of the bottom on the cartridge. Inaddition, once the cartridge is mounted on the stove and has beenpunched, this stove cannot be dismantled as long as the gas is notentirely exhausted.

The present invention aims at meeting these drawbacks by supplying abottle or cartridge provided with a simple, strong and cheap valve,allowing a filling under pressure or a filling by gravity and securing agas-tight closing in case the bottle should be dismantled.

The cartridge according to the invention is characterized in that itincludes in its upper, dome shaped, part a central stamped aperture,with an internally bent wall to form an inner seat cooperating with avalve member which is constituted by a washer, made of an elasticallydistortable material, fixed on a spring blade the end of which is weldedto the inner wall of the bottle and secures the closing of thisvalve-member. At the filling or at the utilization of the bottle, thisvalve member is maintained in the open position by a pusher integralwith a nozzle kept applied to the bottle by a joint concentric to theaperture.

By way of example, a cartridge according to the invention is describedhereafter and illustrated in the annexed drawing in its utilizationposition on a camping stove.

As shown in the drawing, the bottle or cartridge 1, made of sheet steelis provided at its top with a central opening 3 having an inwardly bentcircular edge adapted to form a valve seat which is straightened frominside 3,059,672 Patented Oct. 23., 1962 before the setting of thebottom of the bottle. The seat 3 cooperates with a valve member 4, madeof an elastically distortable material, fixed at one end to a springblade 5, the other end 6 of said spring being electrically welded to theinner wall of the bottle -1: the concave bottom 7 of the bottle is thenset in a known way on the body 1. The bottle is filled under pressure,the opening of the valve member being produced either simply by thepressure of the gas but, preferably, by means of a pusher integral withthe filling nozzle by the aid of a device similar to the deviceillustrated in the drawing and bringing about the opening of the bottleat its use. Therefore, the bottle or cartridge is placed in a known wayin a frame formed by a bottom 8 and two uprights 9, 9, upon which iswelded a small plate 10: this plate is centrally set on a nut 11 inwhich is engaged an externally threaded nozzle 12; integral with theburner 13 and provided with a plug 14. The nozzle is provided at itsbasis with an embedded rubber joint 15 and a pusher 16: the screwing ofthe nozzle 12 in the nut 11 brings about first the gas-tight applicationof the joint 15 on the bottle 1 around the aperture 2 of the valve andafterwards the spacing by the pusher 16 of the valve member from itsseat 3. If it is wished to dismantle the stove before the exhaustion ofthe gas in the can 1, the nozzle 12 is simply unscrewed in the nut 11,whereby the push rod 16 is raised and valve member 4 is forced againstvalve seat 3 by the spring 5 and by the pressure of the gas remaining inthe can 1.

What is claimed is:

In a portable burner or like apparatus using a combustible liquefiedgas, a gas container forming a nonrefillable can adapted to be rejectedafter use, a frame comprising a bottom plate to support said can, twouprights and a top plate carried by said uprights and provided with acentral opening, a nut fixed in said opening, an externally threadednozzle engaging said nut and adapted to be connected to the burner atits upper end, a packing ring provided at the lower end of the nozzleand adapted to be tightened on the top of the can when screwing saidnozzle into the said nut, a central aperture provided against the top ofthe can and having an inwardly bent circular collar shaped edge forminga valve seat, a valve member constituted by a washer made of elasticallydeformable material cooperating with said seat, a spring blade uponwhich said valve member is fixed at one end whereas its other end iswelded on the inner wall of the can, an axially arranged push rodprovided on the lower end of the nozzle and adapted to project into thesaid central opening of the can and to open said valve member when saidnozzle is tightened against the top of the can.

References Cited in the file of this patent UNITED STATES PATENTS2,674,757 Keyes Apr. 13, 1954 2,683,484 Falligant July 13, 19542,853,126 Corlet Sept. 23, 1958

